CLASSIFICATIOJ^S OF ZOOPHYTES. 449 



genera, but who, on critically examining these genera, will 

 deny that he proceeded without caution and without judg- 

 ment, — determined apparently to make as many as could be 

 made, that his successors might be spared the unprofitable 

 task of coining and inventing names ! * 



System of Lamarck. (1816.) 



Class POLYPI. 



Order I. P. ciliati. 

 Polypes without tentacula, but having near the mouth, or at its ori- 

 fice, vibratile cilijB or ciliated and rotatory organs which agitate 

 or whirl the water. 



I Section. — Vibratiles. — Rattulus, Trichocerca, Vaginicola. 



II Section. — Rotiferes. — Folliculina, Brachionus, Furcularia, 



Urceolaria, Vorticella, Tubicolaria. 



Order II. P. denudati. 

 Polypes with tentacula, without an envelope or polypidom, and fixed, 

 either permanently or spontaneously. 



Hydra — Coryne — Pedicellaria — Zoantha. 



Order III. P. vaginati. 



Polypes with tentacula, invariably fixed in an inorganic polypidom 

 which envelops them; and forming, in general, compound animals. 

 * Polypidoms of homogeneous composition. 



I Section. Polypiers fluviatiles. — Difflugia, Cristatella, Spon- 



gilla, Alcyonella. 



II Section. Polypiers vaginiformes. * Polypidoms naked, not 



varnished nor encrusted on the exterior. (1) Cells terminal 

 — Plumatella, Tubularia, Cornularia, Campanularia. (2) 

 Cells lateral — Sertularia, Antennularia, Plumularia, Seria- 

 laria. — ** Polypidoms varnished or slightly crusted on the 

 exterior. Liriozoa, Cellaria, Anguinaria, Dichotomaria, 

 Tibiana, Acetabulum, Polyphysa. 



* Blainville in criticising Lamouroux's latest work, says, " Nous nous bornerons a. 

 dire que Lamouroux a encore considerablement augmente le nombre des genres, 

 surtout parmi les polypiers pierreux, pour y placer im grand nombre de coi'ps organises 

 fossiles, trouves dans le calcaire a polypiers de Caen, et que nialleureuseinent la 

 plupart de ces genres sont mal caracterises, ce dont je me suis assure directement sur 

 les objets memes qui ont servi a ses observations." — Man. d' Actinol. p. 54. 



G G 



